Table 12-1: current rating Technical Tables T12 Current ratings basic table ÖLFLEX For cables with a nominal voltage of up to 1000 V and for heat-resistant cables at an ambient temperature of +30 C. You can find general regulations and recommended values in DIN VDE 0298 part 2 and part 4. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 11 and 15, and based on DIN VDE 0891, 1990-05, part 1. Installation type Number of cores under load A Single-core cables Rubber insulation PVC insulation TPE insulation Heat-resistant IMPORTANT: The information portrayed in this table differs from that in DIN VDE 0298-4, 2013-06. As such, in the event of any uncertainty the current version of DIN VDE 0298-4 always applies. Please observe all applicable conversion factors going beyond table 12-1 for: differing ambient temperature: table 12-2 several-core cables up to10mm 2 with more than 3 cores under load: table 12-3 heat-resistant cables for ambient temperatures exceeding 50 C: table 12-4 for wound cables: table 12-5 bundling of single-core or multi-core cables in pipes, ducts, walls or flooring: table 12-6 bundling of multi-core cables on troughs or conduits: table 12-7 bundling of single-core cables on troughs or conduits: table 12-8 Cable category B Multi-core cables for domestic/handheld equipment Rubber insulation PVC insulation TPE insulation C Multi-core cables excl. domestic/handheld equipment Rubber insulation PVC insulation TPE insulation Heat-resistant D Multi-core rubber-sheathed cables min. 0.6/1 kv Single-core Special rubber core cables 0.6/1 or 1.8/3 kv 1 3) 2 3 2 or 3 3 1 3) Nominal cross-section in mm 2 Current rating in A Current rating in A Current rating in A Current rating in A 0.08 1) 3 - - 2 - - 0.14 1) 4.5 - - 3 - - 0.25 1) 7 - - 4.5 - - 0.34 1) 8 - - 5 - - 0.5 122 ) 3 3 92 ) - - 0.75 15 6 6 12 - - 1.0 19 10 10 15 - - 1.5 24 16 16 18 23 30 2.5 32 25 20 26 30 41 4 42 32 25 34 41 55 1) Current rating values for small conductor cross-sections taken from VDE 0891-1 (0.08 mm 2 0.34 mm 2 ) 2) Extended range for 0.5 mm 2 in line with VDE 0298-4, 2003-08, table 11 3) When bundling single-core, touching or bundled cables, when installed on surfaces, in the open air or on cable conduits, please observe DIN VDE 0298-4, 2013-06, table 10 Note for Low-voltage electrical installations Protection for safety Protection against overcurrent: According to HD 60364-4-43: 2010 and DIN VDE 0100-430 (VDE 0100-430): 2010-10 (IEC 60364-4-43: 2008, modified + Corrigendum Oct. 2008) According to the above-mentioned standard, the requirements for the protection of live conductors from the effects of overcurrents must be observed. This standard describes how live conductors are protected by one or more devices for the automatic disconnection of the supply in the event of overload and short-circuit. Please also observe all applicable current ratings going beyond table 12-1 for: Flexible cables with cross-linked Elastomer insulation for industrial applications: table 12-9 Welding cable H01N2-D: table 12-10 Operating current and power loss of copper conductors: table 12-11 Current rating for cables in the USA: see NEC excerpt in table 13 Cables for fixed installation in buildings: see DIN VDE 0298 part 4, 2013-06, table 3 and 4 ESUY earthing cable: see DIN VDE 0105-1 Cables in machinery: see DIN EN 60204-1/VDE 0113-1 1111
ÖLFLEX T12 Technical Tables Table 12-2: conversion factors For ambient temperatures other than +30 C. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 17. Permissible/recommended operating temperature at the conductor (Details of the maximum value in C can be found in the field Technical data, temperature range for fixed or flexible installation on the relevant product page in the catalogue) Table 12-3: conversion factors 60 C 70 C 80 C 85 C 90 C Ambient temperature in C Conversion factors to be applied to the current rating values in T12-1 30 1.00 1.00 1.00 1.00 1.00 40 0.82 0.87 0.89 0.90 0.91 50 0.58 0.71 0.77-0.82 60-0.50 0.63-0.71 70 - - 0.45-0.58 80 - - - - 0.41 For several-core cables with conductor cross-sections up to 10 mm 2. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 26. Number of cores under load Conversion factor for installation in the open air Conversion factor for installation underground 5 0.75 0.70 7 0.65 0.60 10 0.55 0.50 14 0.50 0.45 24 0.40 0.35 Table 12-4: conversion factors for heat-resistant cables The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 18. Permissible/recommended operating temperature at the conductor (Details of the maximum value in C can be found in the field Technical data, temperature range for fixed or flexible installation on the relevant product page in the catalogue) Ambient temperature in C 90 C 110 C 135 C 180 C Conversion factors to be applied to the current rating values for heat-resistant cables in T 12-1, column A, C or D. up to 50 1.00 1.00 1.00 1.00 75 0.61 1.00 1.00 1.00 85 0.35 0.91 1.00 1.00 105-0.41 0.87 1.00 130 - - 0.35 1.00 175 - - - 0.41 Table 12-5: conversion factors for wound cables The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 27. Number of layers on the coil, drum, reel 1 2 3 4 5 Conversion factor 0.80 0.61 0.49 0.42 0.38 A conversion factor of 0.8 applies to spiral winding (in one layer). 1112
Table 12-6: conversion factors Technical Tables T12 ÖLFLEX For bundling on walls, in pipes and ducts, on flooring and under ceilings. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 21. Configuration for installation Bundled directly on the wall, on the floor, in pipes or ducts for electrical installations. In a single layer on the wall or floor, touching. In a single layer on the wall or floor, with a gap equal to outer diameter d. In a single layer under the ceiling, touching. In a single layer under the ceiling, with a gap equal to outer diameter d. Number of multi-core cables or number of AC or three-phase circuits formed by single-core cables (2 or 3 live conductors) 1 2 3 4 6 10 Conversion factors to be applied to the current rating values in table 12-1 1.00 0.80 0.70 0.65 0.57 0.48 1.00 0.85 0.79 0.75 0.72 0.70 1.00 0.94 0.90 0.90 0.90 0.90 0.95 0.81 0.72 0.68 0.64 0.61 0.95 0.85 0.85 0.85 0.85 0.85 = Symbol for single-core or multi-core cable IMPORTANT: The conversion factors must be applied in order to determine the current rating for cables of the same type and under the same load, when bundled in the same installation type. In the process, the nominal conductor cross-sections must not vary by more than one cross-section classification. 1113
ÖLFLEX T12 Technical Tables Table 12-7: conversion factors For bundling multi-core cables on troughs and conduits. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 22. Non-perforated cable troughs Perforated cable troughs Cable conduits Configuration for installation Number of troughs or conduits Number of multi-core cables 1 2 3 4 6 9 Conversion factors touching 1 0.97 0.84 0.78 0.75 0.71 0.68 touching 1 1.00 0.88 0.82 0.79 0.76 0.73 with gap 1 1.00 1.00 0.98 0.95 0.91 touching 1 1.00 0.88 0.82 0.78 0.73 0.72 with gap 1 1.00 0.91 0.89 0.88 0.87 touching 1 1.00 0.87 0.82 0.80 0.79 0.78 with gap 1 1.00 1.00 1.00 1.00 1.00 IMPORTANT: The factors stated in this table apply only to groups of cables installed in a single layer in configurations as specified above. However, they do not apply if the cables are touching and installed over one another, or if the actual gap dimensions between the cable troughs or cable conduits fall short of the specified gaps. If this is the case, reduce the conversion factors (e.g. as per table 12-6). 1114
Table 12-8: conversion factors Technical Tables T12 ÖLFLEX For bundling single-core cables on troughs and conduits. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 23. Perforated cable troughs Cable conduits Perforated cable troughs Cable conduits Configuration for installation Number of troughs or conduits touching 1 0.98 0.91 0.87 touching 1 0.96 0.86 touching 1 1.00 0.97 0.96 Number of 3-pin circuits formed by single-core cables 1 2 3 To be used as the multiplier Conversion factors for the measurement value of: 1 1.00 0.98 0.96 1 1.00 0.91 0.89 1 1.00 1.00 1.00 arranged horizontally and level arranged vertically and level arranged horizontally and level arranged in a horizontal, triangular configuration arranged in a vertical, triangular configuration arranged in a horizontal, triangular configuration IMPORTANT: The factors stated in this table apply only to groups of single-core cables installed in a single layer in configurations as specified above. However, they do not apply if the cables are touching and installed over one another, or if the actual gap dimensions between the cable troughs or cable conduits fall short of the specified gaps. If this is the case, reduce the conversion factors (e.g. as per table 12-6). If circuits are connected in parallel, each three-conductor bundle of the parallel connection is to be considered as one circuit. 1115
ÖLFLEX T12 Technical Tables Table 12-9: current rating of rubber-sheathed cables Current rating of flexible cables with cross-linked Elastomer insulation for industrial applications (H07RN-F and A07RN-F). The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 13. Installation type: in the open air Number of cores under load Nominal cross-section of copper cond. in mm 2 Differing ambient temperature Permissible operating temperature at the conductor: 60 C Ambient temperature: 30 C 2 3 2 2 3 3 3 1 - - 15 15.5 12.5 13 13.5 1.5 19 16.5 18.5 19.5 15.5 16 16.5 2.5 26 22 25 26 21 22 23 4 34 30 34 35 29 30 30 6 43 38 43 44 36 37 38 10 60 53 60 62 51 52 54 Conversion factors for: Rating A see table T 12-2 Bundling - T 12-8 T 12-7 Wound cables Several-core cables - - T 12-5 - T 12-3 - Conversion factors for other ambient temperatures for heat-resistant cables with cross-linked Elastomer insulation. The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 18.1. Ambient temperature in C Permissible operating temperature: 90 C Conversion factors to be applied to the current rating values in table 12-9 up to 60 1.00 75 0.71 80 0.58 85 0.41 1116
Table 12-10: operating conditions and ratings for welding cables H01N2-D and H01N2-E The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 16. Installation type: in the open air Permissible operating temperature at the conductor 85 C Ambient temperature: 30 C Number of cores under load 1 Mode of operation Continuous operation Intermittent operation Run time - 5 minutes Switch-on duration (ED) 100 % 85 % 80 % 60 % 35 % 20 % 8 % Nominal cross-section of copper cond. in mm 2 10 96 97 98 102 114 137 198 16 130 132 134 142 166 204 301 25 173 179 181 196 234 293 442 35 216 226 229 250 304 384 584 50 274 287 293 323 398 508 779 Mode of operation Continuous operation Rating A Intermittent operation Run time - 10 minutes Switch-on duration (ED) 100 % 85 % 80 % 60 % 35 % 20 % 8 % Nominal cross-section of copper cond. in mm 2 10 96 96 96 97 102 113 152 16 130 131 131 133 144 167 233 25 173 175 176 182 204 244 351 35 216 220 222 233 268 324 477 50 274 281 284 303 356 439 654 Conversion factors for differing ambient temperature Rating A Table T 12-2 Technical Tables T12 ÖLFLEX 1117
ÖLFLEX T12 Technical Tables Table 12-11: operating current and power loss of copper conductors The illustration is taken out of DIN EN 61439-1 (VDE 0660-600-1), 2012-06, Annex H. The following table provides reference values for operating currents and power losses of conductors inside an assembly of switchgears and controlgears under idealised conditions. The computational methods used to create the values are given in order to calculate values for other conditions. For copyright reasons, only excerpts from DIN EN 61439-1 can be mapped at this point. Conductor cross section Configuration for installation Operating current and power loss of single copper conductors with a permissible conductor temperature of 70 C (ambient temperature inside of assemblies of switchgears and controlgears: 55 C) Conductor resistance at 20 C, R 20 a Single-core cable, in a conduit, on walls, arranged horizontally. 6 cables (2 three-phase circuits) continously charged Max. operating current I max b Power loss per core P v Single-core cable, touching, installed in the open air or on a perforated cable trough. 6 cables (2 three-phase circuits) continously charged Max. operating current I max b Power loss per core P v Gap of at least one cable diameter Single-core cable, installed horizontally in the open air with a specified gap Max. operating current I max b Power loss per core P v mm 2 mω/m A W/m A W/m A W/m 1.5 12.1 8 0.8 9 1.3 15 3.2 2.5 7.41 10 0.9 13 1.5 21 3.7 4 4.61 14 1.0 18 1.7 28 4.2 6 3.08 18 1.1 23 2.0 36 4.7 10 1.83 24 1.3 32 2.3 50 5.4 Table 12-12: rated short circuit current densities for cables with copper and aluminum conductors The values given in the table below are reference values and in a simplified form took out of the DIN VDE 0298 part 4, 2013-06, table 28. Copper conductor Insulation material Permissible operating temperatur at the conductor Permissible short circuit temperature ϑ e Conductor temperature at the beginning of the short circuit ϑ a in C 180 135 110 90 80 70 60 50 40 30 rated short circuit current density J thr for 1 s C C A/mm 2 EPR* 60 250** 159 165 170 176 PVC: flexible cable up to 300mm² 70 150 109 117 124 131 138 cables for fixed installation: up to 300 mm² 70 160 115 122 129 136 143 above 300 mm² 70 140 103 111 118 126 133 PVC, heat-resistant 90 150 93 101 109 117 124 131 138 Silicone rubber 180 350** 132 153 164 173 178 182 187 192 196 201 Tinned conductor 200 49 91 109 122 128 135 141 147 153 159 Aluminium conductor PVC cable up to 300 mm² 70 160 76 81 85 90 95 above 300 mm² 70 140 68 73 78 83 88 * Ethylene-Propylene-rubber (EPR) or Ethylene Propylene Diene rubber (EPDM) ** For tinned conductors the temperatur is limited to +200 C, for soft solder connection it is limited to +160 C. 1118